The DC resistance measuring instrument determines the welding and connection quality of the lead wire in the closed loop circuit, whether there is a short circuit or open circuit between the turns of the transformer coil, and whether the tap switch is in good contact, etc., by detecting the resistance value of the DC resistance. The measurement of the DC resistance of the transformer passes the test in the handover test and preventive test of the transformer.

How to treat the role of the DC resistance tester? The DC resistance tester is used to measure the DC resistance value of the power transformer. The DC resistance value of the transformer has great reference value before it enters the transformer maintenance, delivery, and use. Therefore, the DC resistance tester It is a highly practical device and a professional device for measuring the DC resistance of transformer windings and high-power induction equipment.

The DC resistance test of transformer windings is an indispensable test item after transformer handover, overhaul, and tap changer change. How to measure the DC resistance of transformer windings in transformer handover, overhaul, minor repair, change of joint position, fault inspection and preliminary test, etc., how to treat the role of DC resistance tester?

1. Check the welding quality of the wires and leads inside the winding

2. Check whether the contact of each position of the tap changer is good

3. Check whether the windings and lead wires are broken.

4. Check the correctness of the parallel branch circuit, and check whether the windings wound by several parallel wires are broken in one or more places

5. Check whether there is a short circuit between layers and turns.

The DC resistance measuring instrument adopts new power supply technology, which has the characteristics of rapid measurement, small size, convenient use and high measurement accuracy. How to treat the function of the DC resistance tester? It is an ideal device for measuring the DC resistance of transformer windings and high-power induction equipment.